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Cisco Content Services Switch Routing and Bridging Configuration Guide
OL-4580-01
Chapter 1 Configuring Interfaces and Circuits
Configuring Interfaces
Configuring Spanning-Tree Bridge Pathcost
The path cost is the contribution of the interface to the vast path cost towards the
spanning-tree root. Use the bridge pathcost command to set the spanning-tree
path cost for an Ethernet interface or for a trunked Ethernet interface. Enter an
integer from 1 to 65535. The default is dynamically configured based on the
interface speed.
For example, to set a path cost of 9 for e7 on the CSS 11501, enter:
(config-if[e7])# bridge pathcost 9
For example, to set a path cost of 2 for the I/O module in slot 1, Ethernet port 1,
in VLAN3, enter:
(config-if-vlan[1/1-3])# bridge pathcost 2
To restore the default path cost, enter:
(config-if-vlan[1/1-3])# no bridge pathcost
Configuring Spanning-Tree Bridge Port Priority
To set the spanning-tree bridge port priority for an Ethernet interface or for a
trunked Ethernet interface, se the bridge port-priority command. If the CSS has
a bridge port priority that is lower than all other switches, it will be automatically
selected by the other switches as the root switch. Enter an integer from 0 to 255.
The default is 128.
For example, to set a bridge port priority of 100 for e7 on the CSS 11501, enter:
(config-if[e7])# bridge port-priority 100
For example, to set a bridge port priority of 100 for the I/O module in slot 1,
Ethernet port 1, in VLAN3, enter:
(config-if-vlan[1/1-3])# bridge port-priority 100
To restore the default port priority of 128, enter:
(config-if-vlan[1/1-3])# no bridge port-priority